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Boundless Physics
Electric Current and Resistance
Physics Textbooks Boundless Physics Electric Current and Resistance
Physics Textbooks Boundless Physics
Physics Textbooks
Physics

Section 3

Resistance and Resistors

Book Version 3
By Boundless
Boundless Physics
Physics
by Boundless
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4 concepts
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Ohm's Law

Ohm's Law states that current is proportional to voltage; circuits are ohmic if they obey the relation V=IR.

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Temperature and Superconductivity

Superconductivity is a phenomenon of zero electrical resistance and expulsion of magnetic fields in certain materials below a critical temp.

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Resistance and Resistivity

Resistance and resistivity describe the extent to which an object or material impedes the flow of electric current.

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Dependence of Resistance on Temperature

Resistivity and resistance depend on temperature with the dependence being linear for small temperature changes and nonlinear for large.

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